[libvirt] [PATCH 3/7] vircgroup: Introduce virCgroupNewIOThread
Add virCgroupNewIOThread() to mimic virCgroupNewVcpu() except the naming
scheme with use "iothread" rather than "vcpu".
Signed-off-by: John Ferlan <jferlan(a)redhat.com>
---
src/libvirt_private.syms | 1 +
src/util/vircgroup.c | 43 +++++++++++++++++++++++++++++++++++++++++++
src/util/vircgroup.h | 6 ++++++
3 files changed, 50 insertions(+)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index f136d24..8481ed6 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1085,6 +1085,7 @@ virCgroupNewDetectMachine;
virCgroupNewDomainPartition;
virCgroupNewEmulator;
virCgroupNewIgnoreError;
+virCgroupNewIOThread;
virCgroupNewMachine;
virCgroupNewPartition;
virCgroupNewSelf;
diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c
index 8b554a9..2842831 100644
--- a/src/util/vircgroup.c
+++ b/src/util/vircgroup.c
@@ -1492,6 +1492,49 @@ virCgroupNewEmulator(virCgroupPtr domain,
}
+/**
+ * virCgroupNewIOThread:
+ *
+ * @domain: group for the domain
+ * @iothreadid: id of the iothread
+ * @create: true to create if not already existing
+ * @group: Pointer to returned virCgroupPtr
+ *
+ * Returns 0 on success, or -1 on error
+ */
+int
+virCgroupNewIOThread(virCgroupPtr domain,
+ int iothreadid,
+ bool create,
+ virCgroupPtr *group)
+{
+ int ret = -1;
+ char *name = NULL;
+ int controllers;
+
+ if (virAsprintf(&name, "iothread%d", iothreadid) < 0)
+ goto cleanup;
+
+ controllers = ((1 << VIR_CGROUP_CONTROLLER_CPU) |
+ (1 << VIR_CGROUP_CONTROLLER_CPUACCT) |
+ (1 << VIR_CGROUP_CONTROLLER_CPUSET));
+
+ if (virCgroupNew(-1, name, domain, controllers, group) < 0)
+ goto cleanup;
+
+ if (virCgroupMakeGroup(domain, *group, create, VIR_CGROUP_NONE) < 0) {
+ virCgroupRemove(*group);
+ virCgroupFree(group);
+ goto cleanup;
+ }
+
+ ret = 0;
+ cleanup:
+ VIR_FREE(name);
+ return ret;
+}
+
+
int
virCgroupNewDetect(pid_t pid,
int controllers,
diff --git a/src/util/vircgroup.h b/src/util/vircgroup.h
index 90b41f7..19e82d1 100644
--- a/src/util/vircgroup.h
+++ b/src/util/vircgroup.h
@@ -76,6 +76,12 @@ int virCgroupNewEmulator(virCgroupPtr domain,
virCgroupPtr *group)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3);
+int virCgroupNewIOThread(virCgroupPtr domain,
+ int iothreadid,
+ bool create,
+ virCgroupPtr *group)
+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(4);
+
int virCgroupNewDetect(pid_t pid,
int controllers,
virCgroupPtr *group);
--
1.9.3